[1]CAIL I L,DONG Q L,JING L,et al.Characterization of the polyphenol oxidase gene family reveals a novel microRNA involved in posttranscriptional regulation of PPOs in Salvia miltiorrhiza[J].Scientific Reports,2017,7(1):44622.[2]MAYER A M.Polyphenol oxidases in plants and fungi:Going places? A review[J].Phytochemistry,2006,67(21):2318-2331.[3]THIPYAPONG P,HUNT M D,STEFFENS J C.Antisense downregulation of polyphenol oxidase results in enhanced disease susceptibility[J].Planta,2004,220(1):105-117.[4]SHANFA L,CHENMIN Y,VINCENT C L.Conservation and diversity of microRNA-associated copper-regulat ory networks in Populus trichocarpa[J].Journal of Integr Plant Biol,2011，53(11):879-891.[5]LI L,STEFFENS C J.Overexpression of polyphenol oxidase in transgenic tomato plants results in enhanced bacterial disease resistance[J].Planta,2002;215(2):239-247.[6]RICHTER C,DIRKS M E,GRONOVER C S,et al.Silencing and heterologous expression of ppo-2 indicate a specific function of a single polyphenol oxidase isoform in resistance of dandelion (Taraxacum officinale) against Pseudomonas syringae pv.tomato[J].Molecular Plant-microbe Interactions,2012（25）：200-210.[7]FUERST E P,OKUBARA P A,ANDERSON J V,et al.Polyphenol oxidase as a biochemical seed defense echanism[J].Frontiers in Plant Science,2014（5）:689.[8]LIU H,HE R,ZHANG H,et al.Analysis of synonymous codon usage in Zea mays[J].Molecular Biology Reports,2010,37(2):677-684.[9]CHIAPELLO H,LISACEK F,CABOCHE M,et al.Codon usage and gene function are related in sequences of Arabidopsis thaliana[J].Gene,1998,209:1-38.[10]LIU Q P,FENG Y,ZHAO X A,et al.Synonymous codon usage bias in Oryza sativa[J].Plant Science,2004(167):101-105.[11]BRAGG J G,QUIGG A,RAVEN J A,et al.Protein elemental sparing and codon usage bias are correlated among bacteria[J].Molecular Ecology,2012（21）:2480-2487.[12]MEGANATHAN P R,PAGAN H J T,MCCULLOCH E S,et al.Complete mitochondrial genome sequencesof three bats species and whole genome mitochondrial analyses reveal patterns of codon bias and lend support to abasal split in Chiroptera[J].Gene,2012,492:121-129.[13]NIE X,DENG P,FENG K,et al.Comparative analysis of codon usage patterns in chloroplast genomes of the Asteraceae family[J].Plant Molecular Biology Reporter,2014（32）：828-840.[14]PARAN I,KNAAP E V D.Genetic and molecular regulation of fruit and plant domestication traits in tomato and pepper[J].Journal of Experimental Botany,2007,58(14):3841-3852.[15]QIN C,YU C,SHEN Y,et al.Whole-genome sequencing of cultivated and wild peppers provides insights int Capsicum domestication and specialization[J].Proceedings of the National Academy of Sciences,2014,111(14):5135-5140.[16]ZHANG J,LI B,YANG Y,et al.Genome-wide characterization and expression profiles of the superoxide dismutase gene family in Gossypium[J].International Journal of Genomics,2016(6):1-11.[17]宗秋芳,黄焱杰,吴丽思,等.猪Claudin家族基因密码子使用偏好性分析[J].浙江农业学报,2018,30(12):2007-2017.[18]WRIGHT F.The ‘effective number of codons’ used in a gene[J].Gene,1990,87(1):23-29.[19]STENICO M,LLOYD A T,SHARP P M.Codon usage in Caenorhabditis elegans:Delineation of translational selection and mutational biases[J].Nucleic Acids Research,1994,22(13):2437-2446.[20]时慧，王玉，杨路成，等.茶树抗寒调控转录因子ICE1密码子偏性分析[J].园艺学报,2012,39(7):1341-1352.[21]SUEOKA N.Directional mutation pressure and neutral molecular evolution[J].Proceedings of the National Academy of Sciences,1988，85(8):2653-2657.[22]赵森,邓力华,陈芬.不同植物FERONIA基因密码子使用偏好性分析[J].江苏农业学报,2020,36(5):1073-1081.[23]李媛,多杰措,熊辉岩,等.大麦HD-Zip基因家族密码子偏好性分析[J].麦类作物学报,2020,40(2):144-153.[24]惠小涵,程婷婷,柯卫东,等.莲藕PPO基因密码子偏好性特征分析[J].江苏农业学报,2020,36(2):438-446.[25]宋辉,王鹏飞,马登超,等.蒺藜苜蓿 WRKY转录因子密码子使用偏好性分析[J].农业生物技术学报,2015,23(2):207.[26]简雪艳,杨菊.木通叶绿体基因组密码子偏好性分析[J].分子植物育种,2021,36(2):1-12.[27]段淋渊,戴国礼,焦恩宁,等.枸杞自交不亲和基因S-RNase密码子偏性分析[J].西南林业大学学报(自然科学版),2020,40(2):44-52.[28]赵春丽,彭丽云,王晓,等.苋菜AtGAI基因密码子偏好性与进化分析[J].中国农业大学学报,2019,24(12):10-22.[29]郭秀丽,王玉,杨路成,等.茶树〖STBX〗CBF1〖STBZ〗基因密码子使用特性分析[J].遗传,2012,34(12):1614-1623.[30]聂江婷.籽粒苋PEPC、PPDK启动子功能研究和PPDK基因密码子分析[D].大同：山西大学,2015.